REFERENCE: O-8664-1.0.0 Company / organisation UIC ERTMS/GSM-R Operators Group Kapsch CarrierCom Nokia ETCS in PS-mode GPRS/EGPRS Guideline ACCESS: Public Restricted Confidential NAME DATE VISA Author(s) I. Wendler (UIC) S. Guillemaut (KCC) M. Lauwers (Nokia) Reviewed TEN-T 3rd Call WP Leader 12/2014 I. WENDLER Approval UIC ERIG Chairman 02/2016 R. SARFATI This document is the property of UIC N°: O-8664 Page 1 of 82 DOCUMENT HISTORY Version Date Author Modification 0.1 08.11.2013 Kapsch First draft release of the document. Converted into a UIC – GSM-R IG 0.2 12.02.2014 SBB/Ingo Wendler document Revised draft release applicable to all 0.23 24.09.2014 SBB/ Ingo Wendler chapters of the document 0.24 30.10.2014 SBB/ Ingo Wendler Chapter 5 enhanced by subchapter 5.6 0.25 12.11.2014 Nokia/KCC/SBB Comments incorporated Comments incorporated Chapter 2.4.3 0.26 25.11.2014 SBB/ Ingo Wendler Chapter 6 Chapter 8.7, 8.8 Kapsch/Stéphane Guillemaut Chapter 2.9 adapted 0.27 05.12.2014 Nokia/ Marc Lauwers Chapter 8.5, 8.8 adapted SBB/ Ingo Wendler Chapter 2.1, 2.3, 7 changes ProRail/ Jos Nooijen 0.28 17.12.2014 incorporated SBB/Ingo Wendler Document formatted Final document with front page 1.0 15.02.2016 UIC reviewed. Content based on 0.28 This document is the property of UIC N°: O-8664 Page 2 of 82 TABLE OF CONTENTS 1 Introduction .......................................................................................................... 8 1.1 Purpose ........................................................................................................... 8 1.2 References ...................................................................................................... 9 1.3 Abbreviations and definitions ...................................................................... 11 2 GSM reference ................................................................................................... 15 2.1 Network Architecture [1] ............................................................................. 15 2.1.1 Reference Architecture ......................................................................... 15 2.1.2 Network Architecture Requirement(s): ................................................ 16 2.2 GPRS bearer protocol stack (A/Gb mode) [2] ............................................. 17 2.2.1 GPRS protocol stack ............................................................................ 17 2.2.2 Interface Mode between radio access and core network ..................... 19 2.2.3 Specific Protocol Requirements ........................................................... 19 2.3 Interfaces ...................................................................................................... 19 2.3.1 Um Interface ........................................................................................ 20 2.3.2 Abis Interface ....................................................................................... 20 2.3.3 Gb-interface ......................................................................................... 20 2.3.4 Packet Core Network (Gn/Gp)............................................................. 21 2.3.5 Interface requirements ......................................................................... 21 2.4 IP addressing ................................................................................................ 21 2.4.1 General Aspects ................................................................................... 21 2.4.2 Principles ............................................................................................. 22 2.4.3 Packet Core Network ........................................................................... 23 2.4.4 OBU IP address pool ........................................................................... 23 2.4.5 RBC IP addressing ............................................................................... 24 2.4.6 IP addressing requirements ................................................................. 24 2.5 Mobile Classes [2] ....................................................................................... 24 2.5.1 GPRS/EGPRS Mobile Classes ............................................................. 24 2.5.2 Requirements Mobile Classes .............................................................. 25 2.6 Channel Coding [13], [14] ........................................................................... 25 2.6.1 General Aspects ................................................................................... 25 2.6.2 GPRS channel coding .......................................................................... 27 2.6.3 EGPRS channel coding ........................................................................ 27 2.6.4 Retransmission algorithm(s) ................................................................ 28 2.6.5 Requirements Channel Coding and Retransmission algorithms ......... 30 2.7 GSM-R - Radio Network Architecture ........................................................ 31 2.7.1 General Aspects ................................................................................... 31 2.7.2 Single Radio Layer architecture - limited adjacent cell overlapping .. 31 2.7.3 Single Radio Layer Coverage – extended ............................................ 31 2.7.4 Dual Radio Layer Coverage- no layer offset ....................................... 32 2.7.5 Dual Radio Layer Coverage - with layer offset ................................... 32 2.8 GSM-R Radio Network planning ................................................................ 33 2.8.1 General Aspects ................................................................................... 33 2.8.2 Requirements GSM-R Radio Network planning .................................. 33 2.9 Control Channels ......................................................................................... 33 2.9.1 General Aspects ................................................................................... 33 2.9.2 GSM-R Signalling channel capacity limitations .................................. 35 2.10 ETCS application characteristics ................................................................. 36 This document is the property of UIC N°: O-8664 Page 3 of 82 3 Radio Link Operation........................................................................................ 40 3.1 Transmission channel allocation .................................................................. 40 3.1.1 General Aspects ................................................................................... 40 3.1.2 GPRS/EGPRS Capacity dimensioning principles ............................... 40 3.1.3 Requirements transmission channel allocation ................................... 41 3.2 Radio Link Control (RLC) operation mode ................................................. 42 3.2.1 General Aspects ................................................................................... 42 3.2.2 Unacknowledged Mode ........................................................................ 42 3.2.3 Acknowledged Mode ............................................................................ 42 3.3 Temporary Block Flow ................................................................................ 43 3.3.1 General Aspects ................................................................................... 43 3.3.2 TBF resource allocation [10] .............................................................. 43 3.3.3 TBF termination - resource release ..................................................... 45 3.4 Requirements/Recommendations Temporary Block Flow .......................... 46 4 GPRS/EGPRS Mobility ..................................................................................... 48 4.1 General Aspects ........................................................................................... 48 4.1.1 Cell Update .......................................................................................... 48 4.1.2 Cell Change ......................................................................................... 50 4.1.3 Cell Reselection Criterions .................................................................. 54 4.1.4 Requirements/Recommendation GPRS Mobility ................................. 55 5 Quality of Service ............................................................................................... 56 5.1 General Aspects ........................................................................................... 56 5.2 ETCS QoS Profile subscription ................................................................... 58 5.3 BSS QoS Management ................................................................................ 58 5.4 Packet Core and external IP network QoS Management ............................. 60 5.5 Roaming and QoS settings ........................................................................... 61 5.6 Mobile terminated traffic ............................................................................. 61 5.7 Requirements QoS management .................................................................. 61 6 Power Control [16] ............................................................................................. 63 6.1 General Aspects ........................................................................................... 63 6.2 Uplink Power Control .................................................................................. 63 6.3 Downlink Power/Power Control .................................................................